Add amphotericin as a resource type

[rgxai]

We need to add amphotericin (which is a drug for black fungus) to our resource types

• Add the above to tweet fetch query "amphotericin"
• Add it to the resources.json
• add it to categories file under the medicine category

[SwarnimWalavalkar]

Closed by https://github.com/covidarmy/backend/commit/885ba25e0ad7d4a8bf8a953ddf992d74aae5df1e